Abstract: A digital signal processor receives 1-bit audio signals acquired by sigma modulation and sent over a predetermined transmission line and makes a changeover between the audio signal and a mute pattern includes an IEEE 1394 interface. The IEEE 1394 interface receives an isochronous packet sent over an IEEE 1394-formatted transmission line, extracts music data from the packet, supplies the music data to a DRAM, monitors the amount of data stored in the DRAM, reads a 1-bit digital signal or generates a mute pattern such as a 9-6 pattern, and makes a changeover between the 1-bit digital signal read from the DRAM and mute pattern while fading them. The digital signal processor further includes a D-A converter to convert the 1-bit digital signal supplied from the IEEE 1394 interface into an analog signal.

Abstract: A tractor comprising a vehicle frame, an engine including a flywheel, a first vibration isolator through which the engine is supported by the vehicle frame, and a transmission including an input shaft and a housing, wherein the input shaft is disposed at an upper portion of the housing and lower than a rotary axis of the flywheel. A pair of first and second universal joints are interposed between the flywheel and the input shaft. The first universal joint being nearer to the flywheel than the second universal joint. A second vibration is isolator interposed at least either between the flywheel and the first universal joint or between the input shaft and second universal joint.

Abstract: A signal reproduction device and signal reproduction method capable of automatically discriminating the format of input data and reproducing the data is provided.

Abstract: The present invention provides a digital signal processor which receives 1-bit audio signals acquired by the &Dgr;-sigma modulation and sent over a predetermined transmission line and makes a changeover the audio signal and a mute pattern. The digital signal processor includes an IEEE 1394 interlace (31). The IEEE 1394 interface (31) receives an isochronous packet sent over an IEEE 1394-formatted transmission line (20), extracts music data from the packet, supplies the music data to a DRAM (32), monitors the amount of data stored in the DRAM (32), reads a 1-bit digital signal or generates a mute pattern such as a 9-6 pattern, and makes a changeover between the 1-bit digital signal read from the DRAM (32) and mute pattern while fading them. The digital signal processor further includes a D-A converter (35) to convert the 1-bit digital signal supplied from the IEEE 1394 interface (31) into an analog signal.

Abstract: A tractor comprising a vehicle frame, an engine including a flywheel, a first vibration isolator through which the engine is supported by the vehicle frame, and a transmission including an input shaft and a housing, wherein the input shaft is disposed at an upper portion of the housing and lower than a rotary axis of the flywheel. A pair of first and second universal joints are interposed between the flywheel and the input shaft. The first universal joint being nearer to the flywheel than the second universal joint. A second vibration is isolator interposed at least either between the flywheel and the first universal joint or between the input shaft and second universal joint.

Abstract: An axle driving system, wherein a first chamber and a second chamber partitioned from each other are formed in a housing, a hydraulic non-stage transmission is housed in the first chamber, axles and means for transmitting power from the transmission to the axles is housed in the second chamber. At the upper portion of the housing is disposed an oil storage tank positioned across the first and second chamber. Oil through-bores for flowing oil therethrough are provided in the first and second chambers respectively. At the oil storage tank are provided means in common to charge oil into each chamber. Means for observing oil quantity, and breather means for ventilating outside air are also provided.

Abstract: An axle driving system, wherein a first chamber and a second chamber partitioned from each other are formed in a housing, a hydraulic non-stage transmission is housed in the first chamber, axles and means for transmitting power from the transmission to the axles is housed in the second chamber. At the upper portion of the housing is disposed an oil storage tank positioned across the first and second chamber. Oil through-bores for flowing oil therethrough are provided in the first and second chambers respectively. At the oil storage tank are provided means in common to charge oil into each chamber. Means for observing oil quantity, and breather means for ventilating outside air are also provided.

Abstract: A power transmission structure for a working car provided at the center thereof with a working machine, such as a mower. Power is transmitted by the simplest mechanism from a vertical engine to axles and the working machine. Two output pulleys are attached to a vertical rotary output shaft of the vertical engine. One pulley drives a pump shaft of an axle driving unit and the other pulley drives an input pulley of the working machine. A hydraulic power transmission and a differential gear are laterally eccentrically disposed within the axle driving unit. The hydraulic transmission comprises a hydraulic pump and a hydraulic motor. Power is transmitted from the rotary output shaft of the vertical engine to a vertical pump shaft of the hydraulic pump. A motor shaft of the hydraulic motor is operatively connected to the differential gear.

Abstract: A hydraulic power transmission including a compact external oil pressure takeoff apparatus which houses therein a hydrostatic transmission, and attaches thereto a charge pump. The transmission is capable of supplying operating oil and of taking out external oil pressure. Specifically, part of the discharge oil from the charge pump is adapted to be taken out from the housing so as to omit the need for an external takeout pump. An oil filter is disposed on the exterior of the housing, thereby facilitating maintenance of the hydraulic power transmission.

Abstract: A planetarium comprises a star field projector which projects the star field, a ring-shaped member which supports the star field projector rotatably about a first axis, a first rotating member which supports the ring-shaped member rotatably about a second axis orthogonally crossing the first axis, a support base which supports the first rotating member rotatably about a third axis orthogonally crossing the second axis, a second rotating member provided on the support base rotatable about the third axis independent of the first rotating member, and a coordinates projector provided on the second rotating member.

Abstract: A planetarium includes a fixed star field projector and a plurality of planet projectors spaced from the star field projector. A computerized control controls the rotation of the projectors, each of the planet projectors being controlled in its rotation about a pair of perpendicular axes alternatively in two modes, in the first mode the projected image traversing normal apparent orbital or other path in the star field and in the second mode the image traversing the shortest path from an initial point to a terminal point in the star field which points represent different times and/or points of observation.

Abstract: A fixed-star projecting machine for a planetarium includes a fixed-star projection lens unit in each polygon of the globe surface of a fixed-star projection globe divided into a plurality of parts. Of these projection lens units, one whose projection range covers both sides of the equator is adapted to have its optical axis shifted in the direction which increases the attaching angle. The star positions of the fixed-star negative of the shifted projection lens unit are corrected to the normal projection positions according to the amount of shift.